Letter: Die hard

Regarding the covgerof the 22/29 December edition, may I point out that the sum of the opposite sides of a die is seven? It is therefore impossible for such an object (assuming that it has been correctly manufactured) to be seen in either of the positions portrayed, since the five and two as well as the three and four are shown adjacent to each other.

Timothy Harris Plymouth Devon

To continue reading this article, subscribe to receive access to all of newscientist.com, including 20 years of archive content.

To continue reading this article, log in or subscribe to New Scientist